Pram zone zoo’s organised for female singer (5-7)
I believe the answer is:
mezzo-soprano
'female singer' is the definition.
(I've seen this before)
'pram zone zoo's organised' is the wordplay.
'organised' indicates an anagram.
'pram'+'zone'+'zoos'='pramzonezoos'
'pramzonezoos' is an anagram of 'MEZZO-SOPRANO'.
'for' is the link.
(Other definitions for mezzo-soprano that I've seen before include "Mid-range female singing voice" , "Female singer" .)